How to Grow Autumn Champion Onion
Autumn Champion Onion
Allium cepa
vegetableAutumn Champion is a long-day onion variety that produces large, golden-yellow bulbs with excellent storage potential and mild flavor. This versatile onion is well-suited for fall planting in many regions and develops into substantial bulbs of 3-5 inches diameter. It's a popular choice for both home gardeners and commercial growers seeking reliable, long-keeping onions.
When should you plant Autumn Champion Onion in your zone?
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Example Autumn Champion Onion timeline · Pittsburgh, PA (Zone 6b)
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Plant Autumn Champion Onion
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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Harvest Autumn Champion Onion
Around Aug 15≈ 120 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Autumn Champion Onion dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 3-8, best suited for regions with cool fall conditions and spring harvests
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Get my Autumn Champion Onion timeline →Growth Stages
Planting & Establishment
2-3 weeksSets or transplants are established in soil; initial root development begins
Plant in fall (September-October for spring harvest areas) or early spring; ensure consistent moisture; apply mulch to regulate soil temperature
Vegetative Growth
8-12 weeksGreen foliage develops; multiple leaves emerge from each bulb; root system expands
Maintain consistent watering; apply balanced fertilizer every 3-4 weeks; remove any flower stalks that emerge; keep area weed-free
Bulb Development
6-10 weeksVisible swelling at the base as bulb enlarges; foliage remains green and active
Continue regular watering; reduce nitrogen fertilizer; mulch heavily to keep soil cool and retain moisture; hill soil slightly around base if bulbs protrude
Maturation & Curing
2-4 weeksFoliage yellows and falls over; neck thins; outer skin papery and golden; bulb stops swelling
Reduce watering significantly; stop fertilizing; bend over remaining foliage to direct energy into bulb; allow tops to cure in place for 1-2 weeks if weather permits
Harvest & Storage
Variable based on curing timeBulbs fully mature with dry outer layers; ready for lifting and long-term storage
Harvest when 50-75% of tops have fallen over; cure in dry, well-ventilated area for 2-3 weeks; trim roots and store in cool (40-50°F), dry location
Common Pests
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Use row covers over sets/transplants; apply diatomaceous earth; practice crop rotation; maintain good garden hygiene
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Spray with insecticidal soap or neem oil; remove affected foliage; maintain adequate moisture to prevent stress
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Cover young plants with mesh; apply beneficial nematodes; remove and destroy infested plants
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Ensure good air circulation; avoid overhead watering; apply fungicide if necessary; remove infected leaves
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Practice long crop rotation (6+ years); avoid infected soil; remove and destroy affected plants; improve drainage
Uses
Fresh and Cooked Use
CulinaryAutumn Champion onions have a mild, sweet flavor ideal for roasting, caramelizing, and raw applications like salads and garnishes. Their large size makes them perfect for stuffing or slicing into thick rings for grilling. [source]
Long-Term Storage & Pantry Staple
CulinaryExceptional storage longevity (5-8 months) makes this variety perfect for preserving fall harvests for winter and spring use without refrigeration. Stores better than many other onion varieties due to its thick papery skin. [source]
Natural Cleaning Agent
HouseholdOnion skins and flesh contain compounds with mild antimicrobial properties traditionally used in natural household cleaning preparations and dyes for textiles. [source]
Nutritional & Wellness Support
MedicinalOnions are rich in vitamin C, B vitamins, and quercetin, a powerful antioxidant and anti-inflammatory compound that supports immune function and overall health. [source]
Natural Dye Source
CraftGolden onion skins produce beautiful warm yellow, orange, and brown dyes for textile and fiber arts projects when used in traditional dye baths. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Harvest when 50-75% of foliage has yellowed and fallen over, typically late spring in northern regions. Gently lift bulbs with a garden fork without damaging the skin. Cure in a warm (70-80°F), dry, well-ventilated space for 2-3 weeks until necks are completely dry and papery. Store in mesh bags or braids in a cool (35-50°F), dark location with low humidity for 5-8 months of excellent storage life.
Fun Facts
- 🌱 Autumn Champion is classified as a 'long-day' onion variety, requiring 14+ hours of daylight to trigger bulb formation, making it ideal for northern climates and fall planting regions.
- 🌱 The papery golden skin contains quercetin, which provides both the color and significant antioxidant benefits, making the outer layers nearly as valuable as the inner flesh.
- 🌱 Properly cured and stored Autumn Champion onions can last 5-8 months in cool, dark conditions—longer than many other onion varieties—making them a reliable winter storage crop.
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